Shade-guide.



P. C. PINCHES.

SHADE GUIDE. APPLICATION FILED IEB. I2, IBI?.

Patented N 0V. .20, 1917.

'rrr eras .a

PAUL C. PINCHES, OF BROOKLYN, NEW YORK, f tSSIGNORV TO LEE S. SMITH & SON IVlANU' IEACTURING COMPANY, PENNSYLVANIA.

OF PITTSBURGH, PENNSYLVANIA, A

Specieationof Letters Patent.

CORPORATION or SHADE-GUIDE.

Application led February 15?.,v 1917. Serial No. 148,019.

To LIZ whom it may concern:

Be it known that I, PAUL C. PiNcnEs, a citizen of theV United States, and a resident of Brooklyn, in the county .of Kings and State of New vYork, have invented anew and useful Improvement in Shade-Guides; and l do hereby declare the'following to be a full, clear, and exact description thereof.

My invention relates to shade guides for matching tooth cement, which cement is used as a filling for a.. tooth, and which afterinsertioii has the appearance of a good natural tooth.

The shade guides or samples proper are formed from the different cements, and are designated for each particular cement tint, and heretofore in the manufacture of matching tooth cement various processes have been used, such as supporting the shade samples on suitable devices and designating the saine by characters in order to determine the best sample to be used when placing the saine in position, so that the desired sii-ade of tooth cement could be thereby selected from stock or ordered. ln another process, by the use of such samples, the dili'erent shades or tints for matching were supported on devices and placed iii water, contained in a bottle, so as to wet the saine, in order to keep such samples in a moistened condition and for changing the tints, but this process is unsatisfactory for the reason that the 'water rapidly evaporates from the sainplewhen removed therefrom, so that the shade of the cement when comparatively or altogether dry will differ radically from itsappearance when in a meist condition. `This process also allows the Water to evaporate, by reason of opening the bottle constantly, while such Water will also become stagnant, and by reason of being shipped in such bottles, the bottles are liable to break thereby exposing tlie samples to the air and spoiling the same. In addition to the above objections, an equally important one is the fact that when samples of cement shades are lifted from the water in which they are contained for the purpose of matching teeth in the mouth, the AWater is likely to drip on the clothing of the patient, and great difficult7 is experienced in segregating the various shades before the change resulting from exposure to Vatmospheric conditions.-

The object of my invention is to provide a shade guide for matching tooth cement,

its construction, will which Will be cheap,

be so formed as will retain the shade of cement material from Wliichit Vis formed, .at all times, devices for enabling it to be designated, will not be required to be placed in Water or other liquid to inoisten the same and change the tint, but one which Will overcome all of the objections and difficulties heretofore found in making and handling such samples.

To these ends my invention consists, generally stated, in the novel form of a shade guide for matching tooth cement, as hereinafter more particularly set forth 0r described. Y

ToY enable others skilled in the art lto which my invention appertains, to construct and use my improved shade guide for matching tooth cement, l will describe the same more fully, referring tothe accompanying drawing, in Which Figurel is a front elevation of a shade guide made in accordance Withmy invention; and

Fig. 2 is a section of the same on the line 2 2 of Fig. 1.

Like symbols of reference herein indicate like parts in each of thefigures of the drawing.

As illustrated in the drawing, 1 represents my improved shade guide for matching teeth, which comprises a container 2 for being filled with the Water or other inoistening liquid to be used, and is of fiat and sub` stantially oval shape. This container 2 can be composed of vulcanized rubber, Celluloid, metal, or other suitable material, and cast or formed to shape in any suitable manner, so as to Yf-orm the receptacle 3 Within the same and a filling opening 4 through the front Wall of the saine. This opening 4 is vthreaded, and a threaded cap 5 engages the same and acts as a cover for said opening, as Well as a handle for the device. Formed on the periphery of the upper oval edge of the container 2 are a series of tubular extensions 6, which communicate with the receptacle 3 in the container 2 and are provided with the enlargements 7 at the outer ends of the same. Connected `around each of the eX- Patented Nov. 20, Y1917..'

simple and efficient in' tensions 6 is a rubber or other flexible tube carrying ythe shade guide' or sample 9. lThis giu shade guide or sample is made from 'the usual cement, and such cement is formed of the usual materials which are put up in the form of a powder and mixed with phosphoric acid into a paste. The shade guide or sample can be formed in any suitable manner and into the shape of a tooth, or into any.. tier desired shape and by any suitable means. After being so tormedthe shade guide or sample is provided Ywith a suitable transparent c vering which can be formed'from any suitable'niaterial such as the glaze or glass container l and which can be formed in any suitable manner to conform to the shape of the shade guide or sample. lf desired,v such container can'be formed slightly larger 'than the guide' or sample for the. purpose hereinafter described. This container l0 is provided with a lip ll at its open or lower end, and each of the tubes S are adapted to ycarry a contain'erv having a shadeV sample 9 therein` by the lips on the containers'iitting within the outer ends of the said tubes. Y

These shade samples 9 can be placed within their coverings or containers l0 in any suitable manner, and if desired can beso formed as to provide a space 18 around the same for the water from the container 2 to circulate, as hereinafter described.

In the use of my improved shade guide l, with the parts assembled as above described, and water being placed within the receptacle 3 of the container 2 through the opening 4i, it will be obvious that the samples 9 within the coverings or containers l0 will be kept inoistened through the medium of the water frcm the container tubes 8 and coming in contact with the ends of such samples or in passing around the same through the space 13 between such samples and the said coverings.

It will thus be seen that in illi-ng a tooth with cement it is very often ditiicult to obtain the proper color to match with the tooth to be iilled or the adjacent tooth when the cement serves in making` a tooth, and one is very liable to get the filling either darker or lighter than the tooth itself; out with the invention described, this liability of error is reduced to a minimum. :in the usual processes of forming these shade guides or samples, they bleach out unless used immediately, while by the use of my improved guide the translucency of the material or sample is preserved and maintained, and there is no liability of air coming iii contact with the same to change the shade or tint. By the in vention described the shade sample so covered would present the moist appearance at all times without the necessity of keeping the'same immersed in water or other liquid by hanging the same from devices, 'and yet the covering will be so strong and hard as will-enable the guides carrying the samples 2 passing through the to be packed together `or kept in trays for handling or use by the supply house or dentist. Y

It will also be seen that my improved shade guide will enable each sample to be segregated from the other, so that the proper sample can be determined for matchingby simply bending back the adgatent samples to the one being matched, while such guide i's also easily and yconvenient to handle, is sanitary, can be kept clean, and the parts being detachable can be readily and quickly set in place or taken apart fer the placing of the samples in position or `for any other Apurrose- Y Y c it will be obviousthat my improved shade guide can beformed of materials other than those described and that various modications and changes in the design and cionstruc'tionmay be resorted to without departing from the spirit of the invention or sacri tlcing any of its advantages; lWhat lf claim as my invention and to secure by Letters Patent is` desire l. A shade guide, comprising a receptacle for a moisteiiing liquid, and tubes connected at one end to and having matching cement tooth samples at their other ends for contacting with said liquid through said tubes, said samples having a transparent covering over the same.

2. A shade guide, comprising a receptacle fora moistening liquid, and a plurality of flexible 4tubes connected at one end to said receptacle and having matching` cement tooth samples at their other ends for contacting. with said liquid through said tubes, said samples having a transparent covering over the saine. y

3. A shade guide, comprising a receptacle for a moistening liquid, a tube having its inner end connected to said receptacle, and a matchingrcement tooth sample at the outer end of said tuberfor contacting with said liqay plurality of said receptacle uid through said tube, said sample having a transparent covering over the same.

l. A shade guide, comprising a receptacle for a moistening liquid, a flexible tube hav ing its inner end connected to said receptacle,

and a matching cement tooth sample at the outer end of said tube for contacting with said liquid through said tubes, said sample aving a transparent covering over the same.

5. A shade guide, comprising a receptacle for a moistening liquid, a flexible tube having its inner end connected to said receptacle, and a matching cement tooth sample at the outer end of said tube for contacting with said liquid through said tube, and a covering for said tooth to prevent the atmosphere reaching the same, said covering permitting viewing of said tooth.

6. A shade guide, comprising a receptacle for a moistening liquid, a matching cement tooth sample, means for conveying the liquid from said receptacle to said sample, and veying the liquid from said receptacle to 10 means for preventing the evaporation of said sample.' said liquid, said means allowing viewing of In testnony whereof, I the said PAUL C. saizd totlh. l d 1 PlNoI-nss, have hereunto set my hand.

smc e gui e, com risino a rece tac e T for a mosfening lqudi maichng crnent I PAUL C' PIB CHES' tooth sample having a transparent covering "Wtnesses: over the same, and. means Acommunicating l, XV. LINFoRD SMITH, with said receptacle and said sample for con- A. D. P. MILLER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. l 

